Grey cast iron welding process and self-fluxing homogeneous welding powder

Abstract

The invention relates to a ferrosteel welding technique and self-fusion welding powder technique, wherein said method comprises that: 1, cleaning the defect part, oily dirt and oxidized skin at 30mm around; 2, brushing air agent at the defect part; 3, using prepared self-fusion welding powder to cover the defect; 4, heating around base material at high temperature to burn the welding powder to fuse the welding powder and base material. Said air agent is solvent mainly formed by alkali oxide. And the welding powder comprises aluminum powder at 30-45%; carbon powder at 6-10%; silicon iron powder at 10-14%; titanium iron powder at 9-12% and the left is cast iron powder.

Description

Technical field: [0001] The invention relates to a gray cast iron welding process and material, in particular to a self-fluxing homogeneous welding powder for gray cast iron welding repair and a welding repair process. Background technique: [0002] In the prior art, the known technology is the patent application No. 200510096376.8 published by the State Intellectual Property Office, which discloses a technical solution for a homogeneous welding electrode / gas welding wire for gray cast iron and ductile iron welding. The scheme can realize the welding of gray cast iron at room temperature, and can effectively reduce the tendency of white spots and cracks. The composition, structure and color of the weld are basically the same as those of the casting, but the composition of the scheme is complex and needs to be processed into Welding wire just can use, and this is the weak point that prior art exists. Invention content: [0003] The purpose of the present invention is to ai...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the known technology is the patent application No. 200510096376.8 published by the State Intellectual Property Office, which discloses a technical solution for a homogeneous welding electrode / gas welding wire for gray cast iron and ductile iron welding. The scheme can realize the welding of gray cast iron at room temperature, and can effectively reduce the tendency of white spots and cracks. The composition, structure and color of the weld are basically the same as those of the casting, but the composition of the scheme is complex and needs to be processed into Welding wire can be used, this is the weak point that existing technology exists